A Memorial University researcher is urging well owners in Newfoundland to make lifestyle changes to reduce the risk of disease caused by arsenic exposure. Atanu Sarkar, an assistant professor in the Faculty of Medicine, says years or decades of drinking water contaminated by arsenic increases the risk of several cancers — including kidney, liver and lung cancer — due to epigenetic changes that occur during long-term exposure. "They're more prone to have cancer in [the] future," Sarkar said.